Tubular steel framework, struts, and rubber shock cord landing gear springs made the Piper Cub sturdy. The only instruments were an altimeter, a tachometer, and oil temperature and pressure gauges. The wire-and-cork fuel gauge bobbed up from the tanks in the wing roots. Other trial engines resulted in F, G, and H models, but the E-2 struck a chord, and 348 were built. It weighed 925 pounds and first sold for $1,325.